Fairfax, SD Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Fairfax, SD in one place.
Showers and thunderstorms likely before 5pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 79. Southeast wind 10 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Fairfax, SD is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: May 30, 2026 12:59 AM CDT.
The active forecast window currently covers May 30 to Jun 5, 2026 for Fairfax, SD.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 30 to Jun 5, 2026
- Latest sync
- May 30, 2026 12:59 AM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Fairfax
Friday looks like the warmest upcoming period in Fairfax at 87 degrees F.
Sunday Night is the coolest period ahead with temperatures near 54 degrees F.
The strongest winds are forecast for Saturday at about 10 to 25 mph SE.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- May 30, 2026 12:59 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- FSD
- Radar station
- KLNX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 10pm, then showers and thunderstorms between 10pm and midnight, then a chance of showers and thunderstorms between midnight and 1am, then showers and thunderstorms. Mostly cloudy. Low around 57, with temperatures rising to around 62 overnight. Southeast wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 82. South southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
A chance of showers and thunderstorms before 1am. Partly cloudy. Low around 54, with temperatures rising to around 57 overnight. South southwest wind 5 to 15 mph. Chance of precipitation is 40%.
Mostly sunny, with a high near 81. North wind 10 to 15 mph.
A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 58. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms. Partly sunny, with a high near 83.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 60. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 87.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
May 30
|
Showers And Thunderstorms Likely
|
79°F |
10 to 25 mph
SE
|
|
Saturday Night
May 30
|
Chance Showers And Thunderstorms
|
57°F |
15 to 25 mph
SE
|
|
Sunday
May 31
|
Showers And Thunderstorms
|
82°F |
15 mph
SSE
|
|
Sunday Night
May 31
|
Chance Showers And Thunderstorms
|
54°F |
5 to 15 mph
SSW
|
|
Monday
Jun 1
|
Mostly Sunny
|
81°F |
10 to 15 mph
N
|
|
Monday Night
Jun 1
|
Chance Showers And Thunderstorms
|
58°F |
5 to 10 mph
SE
|
|
Tuesday
Jun 2
|
Slight Chance Showers And Thunderstorms
|
83°F |
5 to 15 mph
SSE
|
|
Tuesday Night
Jun 2
|
Chance Showers And Thunderstorms
|
60°F |
10 to 15 mph
SSE
|
|
Wednesday
Jun 3
|
Chance Showers And Thunderstorms
|
84°F |
10 to 15 mph
S
|
|
Wednesday Night
Jun 3
|
Chance Showers And Thunderstorms
|
60°F |
10 to 15 mph
S
|
|
Thursday
Jun 4
|
Chance Showers And Thunderstorms
|
85°F |
10 to 15 mph
S
|
|
Thursday Night
Jun 4
|
Chance Showers And Thunderstorms
|
60°F |
10 to 15 mph
SSE
|
|
Friday
Jun 5
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
87°F |
10 to 15 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Fairfax.